You're probably referring to Cycles X [1], which if I'm not mistaken has already been released. It will never be on-par with Eevee's performance though as they

You're probably referring to Cycles X [1], which if I'm not mistaken has already been released. It will never be on-par with Eevee's performance though as they are fundamentally different approaches to rendering: Cycles is a physically-based path-tracing engine, while Eevee uses rasterization through OpenGL. 1: https://code.blender.org/2021/04/cycles-x/ https://code.blender.org/2021/04/cycles-x/